Tighten your home security with the Night Owl Wired four-camera DVR security system. Featuring 2K video resolution, this add-on system delivers crisp and clear videos. The two-way audio communication lets you easily talk with the person approaching your cameras. The included hard drive stores all your data and recordings through a secured wired connection. | Night Owl Wired 2-Way Audio DVR Security System with 4 Bullet Indoor/Outdoor 2K Cameras - White